Cooper Williams
2023
| Us Open Junior | [3] | Quarter |
| Wimbledon Junior | [4] | Semi |
| J300Roehampton | [4] | 1R |
| Roland Garros Junior | [9] | Quarter |
| Australian Open Junior | [8] | 3R |
| J300Traralgon | [5] | Semi |
2022
Nation
USA
Age
19 years old (born in 2005)
World Ranking
ATP Ranking　920th
Year-end Junior World Ranking
- Year-end 2023 6th
- Year-end 2022 18th
- Year-end 2021 95th
- Year-end 2020 602th
- Year-end 2019 1187th
Match Details
2023 Us Open Junior
| W | 1R | Gabriele Vulpitta | 6-1 6-0 |
| W | 2R | Markus Molder | 6-2 3-6 7-6 |
| W | 3R | Adhithya Ganesan | 6-0 6-1 |
| L | QF | Joao Fonseca | 6-7 6-3 3-6 |
2023 Wimbledon Junior
| W | 1R | Luca Pow | 7-5 6-1 |
| W | 2R | Sebastian Eriksson | 6-1 3-6 6-4 |
| W | 3R | Alejandro Melero Kretzer | 6-4 6-4 |
| W | QF | Iliyan Radulov | 7-6 6-3 |
| L | SF | Henry Searle | 6-7 3-6 |
2023 J300Roehampton
| L | 1R | Filippo Romano | 6-4 3-6 6-7 |
2023 Roland Garros Junior
| W | 1R | Abel Forger | 7-6 6-1 |
| W | 2R | Sebastian Eriksson | 6-3 6-1 |
| W | 3R | Lorenzo Sciahbasi | 6-3 6-3 |
| L | QF | Darwin Blanch | 6-7 6-2 3-6 |
2023 Australian Open Junior
| W | 1R | Keegan Rice | 6-4 6-3 |
| W | 2R | Hoyoung Roh | 6-4 6-3 |
| L | 3R | Yi Zhou | 1-6 4-6 |
2023 J300Traralgon
| W | 1R | Marcus Schoeman | 6-3 6-0 |
| W | 2R | Yuvan Nandal | 7-6 6-3 |
| W | 3R | Joao Fonseca | 6-4 1-6 6-4 |
| W | QF | Tianhui Zhang | 5-7 6-3 6-0 |
| L | SF | Federico Cina | 6-7 2-6 |
2022 Us Open Junior
| L | 1R | Hynek Barton | 6-2 4-6 3-6 |
2022 Wimbledon Junior
| L | 1R | Ignacio Buse | 2-6 4-6 |
2022 Roland Garros Junior
| L | 1R | Jakub Mensik | 3-6 6-3 5-7 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9482, Number of registered players: 4,990, Number of registered results: 217,154